Number Patterns
Finding the unknown (4 operations) II
Interactive practice questions
We want to work out the value of $d$d that makes the following equation true:
$8+2\times d=16$8+2×d=16
a
First let's complete a simpler expression. Fill in the blank in the equation below.
$8+\editable{}=16$8+=16
b
So $2\times d=8$2×d=8. What number times $2$2 equals $8$8?
Easy
< 1min
We want to work out the value of $d$d that makes the following equation true:
$8+5\times d=28$8+5×d=28
Easy
< 1min
We want to work out the value of $n$n that makes the following equation true:
$26=6+10\times n$26=6+10×n
Easy
< 1min
Let's work out what $b$b must equal to make the following equation true.
$4\times6=b+20$4×6=b+20
Easy
< 1min
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